@drbob : Did you try Polaris BIOS editor (just do small mod like +1 MHz on core)? This utility will damge AMD EFI signature and card will no longer boot up in UEFI mode. You will also need AMD/ATI Pixel Clock Patcher for patching drivers..
@drbob : Did you try Polaris BIOS editor (just do small mod like +1 MHz on core)? This utility will damge AMD EFI signature and card will no longer boot up in UEFI mode. You will also need AMD/ATI Pixel Clock Patcher for patching drivers..